POWER OVER ETHERNET SUPPORT - Dell United States the Dell™ PowerConnect™ 6224 Systems CLI Reference Guide for more detailed information about the commands. POWER INLINE {AUTO|NEVER}

POWER OVER ETHERNET SUPPORT

IN THE DELL™ POWERCONNECT

™

PC6224P AND PC6248P

CONTENTS

INTRODUCTION 3

LEGACY ETHERNET POWERED DEVICE SUPPORT 3

REQUIREMENTS 3

POWER OVER ETHERNET CONFIGURATION 4

POE CONTROLLER FIRMWARE UPGRADE 9

WEB CONFIGURATION 10

CONCLUSION 12

FIGURES

FIGURE 1: PoE GLOBAL CONFIGURATION 10

FIGURE 2: PoE INTERFACE CONFIGURATION 11

FIGURE 3: PoE TABLE 11

CLI CONFIGURATION 4

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POWER OVER ETHERNET SUPPORT IN DELL POWERCONNECT PC6224P AND PC6248P

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INTRODUCTION This paper describes the Power over Ethernet (PoE) support in the Dell™ PowerConnect™ PC6224P and PC6248P Ethernet switches, requirements, and configuration. Power over Ethernet provides electrical power as well as data to remote devices over standard twisted-pair cable, such as existing LAN cabling, without the need to update or modify the network infrastructure. IEEE 802.3af defines the standard to deliver power over Ethernet cables. When you use PoE, you do not need to locate network devices next to power sources. Some of the devices that can use PoE as a power source include:

• IP Phones • Wireless Access Points • IP Gateways • PDAs • Remote audio and video monitoring devices

All 48 physical copper interfaces on the PC6248P and the 24 ports on the PC6224P have the capability to provide power. Some of the salient features are as follows:

1. Endspan PSE configuration is used. 2. Power is supplied over spare ports. Power over data pairs is not supported. 3. The total power budgets for the switches are:

SWITCH TOTAL POWER BUDGET

PC6224P 370 watts

PC6249P (no external power supply) 380 watts

PC6248P (with external power supply) 712 watts

4. Legacy as well as 802.3af compliant powered devices are supported. 5. When the power budget is exceeded, the next port attempting to power up

causes the port with the lowest priority to shut down in order to allow higher priority ports to power up.

6. You can configure a trap to be generated when the power budget is exceeded.

LEGACY ETHERNET POWERED DEVICE SUPPORT The system has the ability to disable legacy Ethernet Powered Device support. By default the system is configured to support Standard 802.3af mode. You can enable legacy mode via the power inline legacy command. REQUIREMENTS The requirements for PoE (spare connections, etc.) are as follows:

1. To be able to provide power to connected powered devices over Ethernet. 2. To be able to power legacy powered devices. 3. To be able to modify the firmware on the DP63000 PoE Controller. For more

information, see PoE Controller Firmware Upgrade on page 9.

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POWER OVER ETHERNET CONFIGURATION Support for PoE configuration is provided through CLI and Web, as well as SNMP. For SNMP support, the standard POWER-ETHERNET MIB, as well as the LVL7-POWER-ETHERNET MIB, are used. CLI CONFIGURATION The following examples use the switch’s Command Line Interface (CLI) for configuring PoE. See the Dell™ PowerConnect™ 6224 Systems CLI Reference Guide for more detailed information about the commands. POWER INLINE {AUTO|NEVER} Use this Interface Configuration (Ethernet) mode CLI command to enable or disable the ability of a port to deliver power. An example is shown below. console>enable console#configure console(config)#interface ethernet 1/g1 console(config-if-1/g1)# power inline auto console(config-if-1/g1)# exit The following table describes the commands used in the previous example.

COMMAND DESCRIPTION

enable Sets the CLI mode to enable privilege mode.

configure Sets the CLI mode to configuration mode.

interface ethernet 1/g1 Sets the CLI mode to configure gigabit ethernet port 1 (referred to in the command as ‘1/g1’). NOTE: Value ‘1’ in “1/g1” specifies the unit number, this number depends on the Stack unit number and can be between 1 to 12.

power inline auto Enables the device discovery protocol and, if found, supplies power to the device.

exit Puts the CLI back into the configuration CLI mode.

POWER INLINE PRIORITY {CRITICAL|HIGH|LOW} Use this Interface Configuration (Ethernet) mode CLI command to configure a port priority level for the delivery of power to an attached device. The switch may not be able to supply power to all connected devices, so the port priority is used to determine which ports will supply power if adequate power capacity is not available for all enabled ports. For ports that have the same priority level, the lower-numbered port has higher priority. For a system delivering peak power to a certain number of devices, if a new device is attached on a high-priority port, power will be shut down to a device on a low-priority port, and the new device will get powered up. An example of the command is shown below. console>enable console#configure console(config)#interface ethernet 1/g1 console(config-if-1/g1)# power inline priority high console(config-if-1/g1)# exit

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The following table describes the commands used in the previous example.

COMMAND DESCRIPTION



power inline usage-threshold 90 Configures the system power usage threshold level at which a trap is generated.

exit Puts the CLI back into the Privileged EXEC mode.

POWER INLINE USAGE-THRESHOLD {PERCENTAGE} Use this Global Configuration mode command to configure the system power usage threshold level at which a trap is generated. The threshold is configured as a percentage of the total system power available. The power limit beyond which lower priority ports are disconnected has the configurable range from 37W to 806W. The maximum available system power for the 6224P and 6248P are 370W and 332W respectively. 37W is approximately 11 percent of these values. Thus, the minimum value of the usage-threshold can be configured as 11. An example of the command is shown below. console>enable console#configure console(config)#power inline usage-threshold 90 console(config)#exit The following table describes the commands used in the previous example.

COMMAND DESCRIPTION



interface ethernet 1/g1 Sets the CLI mode to configure gigabit ethernet port 1 (referred to in the command as ‘1/g1’). NOTE: Value ‘1’ in “1/g1” specifies the unit number, this number depends on the Stack unit number and can be between 1 to 12.

power inline priority high Configures the port priority level for the delivery of power to an attached device.


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POWER INLINE POWERED-DEVICE {PD-TYPE} Use this Interface Configuration (Ethernet) mode command to add a comment or description of the powered device type to enable you to remember what is attached to the interface. An example of the command is shown below. console>enable console#configure console(config)#interface ethernet 1/g1 console(config-if-1/g1)# power inline powered-device IP-phone console(config-if-1/g1)# exit To remove the description, use the no form of the command. no power inline powered-device The following table describes the commands used in the previous examples.

COMMAND DESCRIPTION



power inline powered-device ip-phone Adds a comment or description of the powered device type ip-phone.


interface ethernet 1/g1

Sets the CLI mode to configure gigabit ethernet port 1 (referred to in the command as ‘1/g1’). NOTE: Value ‘1’ in “1/g1” specifies the unit number, this number depends on the Stack unit number and can be between 1 to 12.

POWER INLINE LEGACY Use this Global Configuration mode command to enable or disable the ability of the switch to support legacy Ethernet Powered devices. Legacy support is disabled by default. Examples of the commands are shown below. console>enable console#configure console(config)# power inline legacy console(config)# no power inline legacy console(config)#exit

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COMMAND DESCRIPTION



no power inline legacy Disables the ability of the switch to support legacy Ethernet powered devices.


power inline legacy Enables the ability of the switch to support legacy Ethernet powered devices.

POWER INLINE TRAPS {ENABLE|DISABLE} Use this Global Configuration mode command to enable inline power traps when the PoE system’s total power budget is exceeded. An example of the command is shown below. console>enable console#configure console(config)# power inline traps enable console(config)#exit To disable inline power traps, use the no form of the command. console(config)# no power inline traps The following table describes the commands used in the previous examples.

COMMAND DESCRIPTION



no power inline traps Disables inline power traps.


power inline traps enable Enables inline power traps.

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SHOW POWER INLINE Use this Privileged EXEC mode command to display the total power available, the total power consumed in the system, and the globally configured usage threshold. An example of the com-mand is shown below. console>enable console#show power inline Unit Status Unit 1 Power: On Nominal Power: 150 watt Consumed Power: 120 watts (80%) Unit 2 Power: On Nominal Power: 150 watt Consumed Power: 120 watts (80%) Global Configuration Usage Threshold: 95% Traps: Enabled Legacy Mode: Disabled Port Configuration Port Powered Device State Priority Status Classification [w] ---- -------------- ----- -------- ------ ----------------- 1/g1 IP Phone Model A Auto High On 0.44 - 12.95 1/g2 Wireless AP Model Auto Low On 0.44 - 3.84 The following table describes the commands used in the previous example.

COMMAND DESCRIPTION


show power inline Displays the total power available, the total power consumed in the system, and the globally configured usage threshold.

SHOW POWER INLINE ETHERNET Use this Privileged EXEC mode command to display the power inline summary for an interface. An example of the command is shown below. console>enable console#show power inline Ethernet 1/g1 Port Powered Device State Priority Status Classification [w] ----- --------------- ----- -------- ------ ----------------- 1/g1 IP Phone Model A Auto High On 0.44 - 12.95 Overload Counter……………………………1 Short Counter……………………………………0 Denied Counter…………………………………0 Absent Counter…………………………………0 Invalid Signature Counter……0

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COMMAND DESCRIPTION


show poe-firmware-version Displays the version of the PoE controller firmware present on the PD63000 PoE Controller.

POE CONTROLLER FIRMWARE UPGRADE The PoE firmware is part of the switch operational code. When the switch boots up, the PoE Controller’s firmware version is checked. If the version is different from the one present with the switch code, or if the firmware in the PoE Controller is corrupted or is not present, a firmware upgrade (or download, as the case may be) will be done. A progress indicator on the serial console indicates progress to the user. In case of an error while upgrading, the system displays an error message on the serial console and the error message will also be logged. SHOW POE-FIRMWARE-VERSION Use this Privileged EXEC mode command to display the version of the PoE controller firmware present on the switch file system. An example of the command is shown below. console>enable console#show poe-firmware-version image version..............603_4 The following table describes the commands used in the previous example.

COMMAND DESCRIPTION


show power inline Ethernet 1/g1 Displays the total power available, the total power consumed in the system, and the globally configured usage threshold.

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WEB CONFIGURATION If desired, any of the example configurations above can be performed on the Dell PowerConnect PC6224P and PC6248P switches by using the Web Based Interface (WBI) as well. See the Dell™ PowerConnect™ 6200 Series User’s Guide for a description of the Dell WBI. GLOBAL PARAMETERS PAGE Use the Global Parameters Page to configure and display Global PoE parameters. Figure 1 PoE Global Configuration

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INTERFACE CONFIGURATION PAGE Use this page for PoE Interface configuration. Figure 2 PoE Interface Configuration

INTERFACE CONFIGURATION PAGE (SHOW ALL) This page is displayed when Show All is clicked on the Interface Configuration page to display all interfaces. Figure 3 PoE Table

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CONCLUSION Using the standards-based PoE support in the Dell™ PowerConnect™ PC6224P and PC6248P Ethernet switches, System Administrators can transmit electrical power as well as data to remote devices over standard twisted-pair cable without updating or modifying the network infrastructure. DISCLAIMER THIS HOW-TO GUIDE IS FOR INFORMATIONAL PURPOSES ONLY. IT MAY CONTAIN TYPOGRAPHICAL ERRORS AND TECHNICAL INACCURACIES. THE CONTENT IS PROVIDED AS IS, WITHOUT EXPRESS OR IMPLIED WARRANTIES OF ANY KIND. Information in this document is subject to change without notice. © 2008 Dell Inc. All rights reserved. Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden. For more information, contact Dell. Trademarks used in this text: Dell, OpenManage and PowerConnect are trademarks of Dell, Inc. Other trademarks and tradenames may be used in this document to refer to either entities claiming the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks or trade names other than its own.

Documents

POWER OVER ETHERNET SUPPORT - Dell United States the Dell™ PowerConnect™ 6224 Systems CLI Reference Guide for more detailed information about the commands. POWER INLINE {AUTO|NEVER}